Finding the Third Proportional to 561,439 and 862,983.50

Step by Step Solution

1. Step 1: Write the proportion equation
   561,439 : 862,983.50 = 862,983.50 : x
2. Step 2: Convert to fraction form
   561,439/862,983.50 = 862,983.50/x
3. Step 3: Cross multiply
   561,439x = 862,983.50 × 862,983.50
4. Step 4: Simplify right side
   561,439x = 744,740,521,272.25
5. Step 5: Solve for x
   x = 744,740,521,272.25/561,439
6. Step 6: Final answer
   x = 1,326,485.19