Finding the Third Proportional to 113,128 and 243,740

Step by Step Solution

1. Step 1: Write the proportion equation
   113,128 : 243,740 = 243,740 : x
2. Step 2: Convert to fraction form
   113,128/243,740 = 243,740/x
3. Step 3: Cross multiply
   113,128x = 243,740 × 243,740
4. Step 4: Simplify right side
   113,128x = 59,409,187,600
5. Step 5: Solve for x
   x = 59,409,187,600/113,128
6. Step 6: Final answer
   x = 525,150.16