Finding the Third Proportional to 429,142.50 and 630,576

Step by Step Solution

1. Step 1: Write the proportion equation
   429,142.50 : 630,576 = 630,576 : x
2. Step 2: Convert to fraction form
   429,142.50/630,576 = 630,576/x
3. Step 3: Cross multiply
   429,142.50x = 630,576 × 630,576
4. Step 4: Simplify right side
   429,142.50x = 397,626,091,776
5. Step 5: Solve for x
   x = 397,626,091,776/429,142.50
6. Step 6: Final answer
   x = 926,559.57