Finding the Third Proportional to 478,404 and 740,758.50

Step by Step Solution

1. Step 1: Write the proportion equation
   478,404 : 740,758.50 = 740,758.50 : x
2. Step 2: Convert to fraction form
   478,404/740,758.50 = 740,758.50/x
3. Step 3: Cross multiply
   478,404x = 740,758.50 × 740,758.50
4. Step 4: Simplify right side
   478,404x = 548,723,155,322.25
5. Step 5: Solve for x
   x = 548,723,155,322.25/478,404
6. Step 6: Final answer
   x = 1,146,986.97