Finding the Third Proportional to 478,381 and 740,251.50

Step by Step Solution

1. Step 1: Write the proportion equation
   478,381 : 740,251.50 = 740,251.50 : x
2. Step 2: Convert to fraction form
   478,381/740,251.50 = 740,251.50/x
3. Step 3: Cross multiply
   478,381x = 740,251.50 × 740,251.50
4. Step 4: Simplify right side
   478,381x = 547,972,283,252.25
5. Step 5: Solve for x
   x = 547,972,283,252.25/478,381
6. Step 6: Final answer
   x = 1,145,472.51