Finding the Third Proportional to 478,722 and 708,838.50

Step by Step Solution

1. Step 1: Write the proportion equation
   478,722 : 708,838.50 = 708,838.50 : x
2. Step 2: Convert to fraction form
   478,722/708,838.50 = 708,838.50/x
3. Step 3: Cross multiply
   478,722x = 708,838.50 × 708,838.50
4. Step 4: Simplify right side
   478,722x = 502,452,019,082.25
5. Step 5: Solve for x
   x = 502,452,019,082.25/478,722
6. Step 6: Final answer
   x = 1,049,569.52