Finding the Third Proportional to 429,051 and 642,748.50

Step by Step Solution

1. Step 1: Write the proportion equation
   429,051 : 642,748.50 = 642,748.50 : x
2. Step 2: Convert to fraction form
   429,051/642,748.50 = 642,748.50/x
3. Step 3: Cross multiply
   429,051x = 642,748.50 × 642,748.50
4. Step 4: Simplify right side
   429,051x = 413,125,634,252.25
5. Step 5: Solve for x
   x = 413,125,634,252.25/429,051
6. Step 6: Final answer
   x = 962,882.35