Finding the Third Proportional to 478,341 and 740,618.25

Step by Step Solution

1. Step 1: Write the proportion equation
   478,341 : 740,618.25 = 740,618.25 : x
2. Step 2: Convert to fraction form
   478,341/740,618.25 = 740,618.25/x
3. Step 3: Cross multiply
   478,341x = 740,618.25 × 740,618.25
4. Step 4: Simplify right side
   478,341x = 548,515,392,233.06
5. Step 5: Solve for x
   x = 548,515,392,233.06/478,341
6. Step 6: Final answer
   x = 1,146,703.70