Finding the Third Proportional to 425,232 and 639,769.50

Step by Step Solution

1. Step 1: Write the proportion equation
   425,232 : 639,769.50 = 639,769.50 : x
2. Step 2: Convert to fraction form
   425,232/639,769.50 = 639,769.50/x
3. Step 3: Cross multiply
   425,232x = 639,769.50 × 639,769.50
4. Step 4: Simplify right side
   425,232x = 409,305,013,130.25
5. Step 5: Solve for x
   x = 409,305,013,130.25/425,232
6. Step 6: Final answer
   x = 962,545.18