Finding the Third Proportional to 478,339.50 and 740,616

Step by Step Solution

1. Step 1: Write the proportion equation
   478,339.50 : 740,616 = 740,616 : x
2. Step 2: Convert to fraction form
   478,339.50/740,616 = 740,616/x
3. Step 3: Cross multiply
   478,339.50x = 740,616 × 740,616
4. Step 4: Simplify right side
   478,339.50x = 548,512,059,456
5. Step 5: Solve for x
   x = 548,512,059,456/478,339.50
6. Step 6: Final answer
   x = 1,146,700.32