Finding the Third Proportional to 478,539 and 697,036.50

Step by Step Solution

1. Step 1: Write the proportion equation
   478,539 : 697,036.50 = 697,036.50 : x
2. Step 2: Convert to fraction form
   478,539/697,036.50 = 697,036.50/x
3. Step 3: Cross multiply
   478,539x = 697,036.50 × 697,036.50
4. Step 4: Simplify right side
   478,539x = 485,859,882,332.25
5. Step 5: Solve for x
   x = 485,859,882,332.25/478,539
6. Step 6: Final answer
   x = 1,015,298.40