Finding the Third Proportional to 478,965 and 798,243.75

Step by Step Solution

1. Step 1: Write the proportion equation
   478,965 : 798,243.75 = 798,243.75 : x
2. Step 2: Convert to fraction form
   478,965/798,243.75 = 798,243.75/x
3. Step 3: Cross multiply
   478,965x = 798,243.75 × 798,243.75
4. Step 4: Simplify right side
   478,965x = 637,193,084,414.06
5. Step 5: Solve for x
   x = 637,193,084,414.06/478,965
6. Step 6: Final answer
   x = 1,330,354.17