Finding the Third Proportional to 478,612.50 and 740,995.50

Step by Step Solution

1. Step 1: Write the proportion equation
   478,612.50 : 740,995.50 = 740,995.50 : x
2. Step 2: Convert to fraction form
   478,612.50/740,995.50 = 740,995.50/x
3. Step 3: Cross multiply
   478,612.50x = 740,995.50 × 740,995.50
4. Step 4: Simplify right side
   478,612.50x = 549,074,331,020.25
5. Step 5: Solve for x
   x = 549,074,331,020.25/478,612.50
6. Step 6: Final answer
   x = 1,147,221.04