Finding the Third Proportional to 864,549 and 1,389,082.50

Step by Step Solution

1. Step 1: Write the proportion equation
   864,549 : 1,389,082.50 = 1,389,082.50 : x
2. Step 2: Convert to fraction form
   864,549/1,389,082.50 = 1,389,082.50/x
3. Step 3: Cross multiply
   864,549x = 1,389,082.50 × 1,389,082.50
4. Step 4: Simplify right side
   864,549x = 1,929,550,191,806.25
5. Step 5: Solve for x
   x = 1,929,550,191,806.25/864,549
6. Step 6: Final answer
   x = 2,231,857.53