Finding the Third Proportional to 429,132.50 and 630,561.50

Step by Step Solution

1. Step 1: Write the proportion equation
   429,132.50 : 630,561.50 = 630,561.50 : x
2. Step 2: Convert to fraction form
   429,132.50/630,561.50 = 630,561.50/x
3. Step 3: Cross multiply
   429,132.50x = 630,561.50 × 630,561.50
4. Step 4: Simplify right side
   429,132.50x = 397,607,805,282.25
5. Step 5: Solve for x
   x = 397,607,805,282.25/429,132.50
6. Step 6: Final answer
   x = 926,538.55