Finding the Third Proportional to 586,443 and 864,112.50

Step by Step Solution

1. Step 1: Write the proportion equation
   586,443 : 864,112.50 = 864,112.50 : x
2. Step 2: Convert to fraction form
   586,443/864,112.50 = 864,112.50/x
3. Step 3: Cross multiply
   586,443x = 864,112.50 × 864,112.50
4. Step 4: Simplify right side
   586,443x = 746,690,412,656.25
5. Step 5: Solve for x
   x = 746,690,412,656.25/586,443
6. Step 6: Final answer
   x = 1,273,253.18