Finding the Third Proportional to 129,918 and 293,441.25

Step by Step Solution

1. Step 1: Write the proportion equation
   129,918 : 293,441.25 = 293,441.25 : x
2. Step 2: Convert to fraction form
   129,918/293,441.25 = 293,441.25/x
3. Step 3: Cross multiply
   129,918x = 293,441.25 × 293,441.25
4. Step 4: Simplify right side
   129,918x = 86,107,767,201.56
5. Step 5: Solve for x
   x = 86,107,767,201.56/129,918
6. Step 6: Final answer
   x = 662,785.50