Finding the Third Proportional to 425,385 and 629,869.50

Step by Step Solution

1. Step 1: Write the proportion equation
   425,385 : 629,869.50 = 629,869.50 : x
2. Step 2: Convert to fraction form
   425,385/629,869.50 = 629,869.50/x
3. Step 3: Cross multiply
   425,385x = 629,869.50 × 629,869.50
4. Step 4: Simplify right side
   425,385x = 396,735,587,030.25
5. Step 5: Solve for x
   x = 396,735,587,030.25/425,385
6. Step 6: Final answer
   x = 932,650.63