Finding the Third Proportional to 55,639,836 and 85,111,988

Step by Step Solution

1. Step 1: Write the proportion equation
   55,639,836 : 85,111,988 = 85,111,988 : x
2. Step 2: Convert to fraction form
   55,639,836/85,111,988 = 85,111,988/x
3. Step 3: Cross multiply
   55,639,836x = 85,111,988 × 85,111,988
4. Step 4: Simplify right side
   55,639,836x = 7,244,050,501,312,144
5. Step 5: Solve for x
   x = 7,244,050,501,312,144/55,639,836
6. Step 6: Final answer
   x = 130,195,396.36