Finding the Third Proportional to 111,768,439,898.81 and 243,765,790,878.38

Step by Step Solution

1. Step 1: Write the proportion equation
   111,768,439,898.81 : 243,765,790,878.38 = 243,765,790,878.38 : x
2. Step 2: Convert to fraction form
   111,768,439,898.81/243,765,790,878.38 = 243,765,790,878.38/x
3. Step 3: Cross multiply
   111,768,439,898.81x = 243,765,790,878.38 × 243,765,790,878.38
4. Step 4: Simplify right side
   111,768,439,898.81x = 59,421,760,802,562,091,515,904
5. Step 5: Solve for x
   x = 59,421,760,802,562,091,515,904/111,768,439,898.81
6. Step 6: Final answer
   x = 531,650,623,882.38