Finding the Third Proportional to 478,889.72 and 717,013.27

Step by Step Solution

1. Step 1: Write the proportion equation
   478,889.72 : 717,013.27 = 717,013.27 : x
2. Step 2: Convert to fraction form
   478,889.72/717,013.27 = 717,013.27/x
3. Step 3: Cross multiply
   478,889.72x = 717,013.27 × 717,013.27
4. Step 4: Simplify right side
   478,889.72x = 514,108,023,082.23
5. Step 5: Solve for x
   x = 514,108,023,082.23/478,889.72
6. Step 6: Final answer
   x = 1,073,541.58