Finding the Third Proportional to 221,932.50 and 485,389.50

Step by Step Solution

1. Step 1: Write the proportion equation
   221,932.50 : 485,389.50 = 485,389.50 : x
2. Step 2: Convert to fraction form
   221,932.50/485,389.50 = 485,389.50/x
3. Step 3: Cross multiply
   221,932.50x = 485,389.50 × 485,389.50
4. Step 4: Simplify right side
   221,932.50x = 235,602,966,710.25
5. Step 5: Solve for x
   x = 235,602,966,710.25/221,932.50
6. Step 6: Final answer
   x = 1,061,597.41