Finding the Third Proportional to 429,320.25 and 630,853.31

Step by Step Solution

1. Step 1: Write the proportion equation
   429,320.25 : 630,853.31 = 630,853.31 : x
2. Step 2: Convert to fraction form
   429,320.25/630,853.31 = 630,853.31/x
3. Step 3: Cross multiply
   429,320.25x = 630,853.31 × 630,853.31
4. Step 4: Simplify right side
   429,320.25x = 397,975,901,892.22
5. Step 5: Solve for x
   x = 397,975,901,892.22/429,320.25
6. Step 6: Final answer
   x = 926,990.75