Finding the Third Proportional to 563,863.50 and 863,658

Step by Step Solution

1. Step 1: Write the proportion equation
   563,863.50 : 863,658 = 863,658 : x
2. Step 2: Convert to fraction form
   563,863.50/863,658 = 863,658/x
3. Step 3: Cross multiply
   563,863.50x = 863,658 × 863,658
4. Step 4: Simplify right side
   563,863.50x = 745,905,140,964
5. Step 5: Solve for x
   x = 745,905,140,964/563,863.50
6. Step 6: Final answer
   x = 1,322,847.00