Finding the Third Proportional to 561,426 and 862,960.50

Step by Step Solution

1. Step 1: Write the proportion equation
   561,426 : 862,960.50 = 862,960.50 : x
2. Step 2: Convert to fraction form
   561,426/862,960.50 = 862,960.50/x
3. Step 3: Cross multiply
   561,426x = 862,960.50 × 862,960.50
4. Step 4: Simplify right side
   561,426x = 744,700,824,560.25
5. Step 5: Solve for x
   x = 744,700,824,560.25/561,426
6. Step 6: Final answer
   x = 1,326,445.20