Finding the Third Proportional to 221,592 and 486,265.50

Step by Step Solution

1. Step 1: Write the proportion equation
   221,592 : 486,265.50 = 486,265.50 : x
2. Step 2: Convert to fraction form
   221,592/486,265.50 = 486,265.50/x
3. Step 3: Cross multiply
   221,592x = 486,265.50 × 486,265.50
4. Step 4: Simplify right side
   221,592x = 236,454,136,490.25
5. Step 5: Solve for x
   x = 236,454,136,490.25/221,592
6. Step 6: Final answer
   x = 1,067,069.82