Finding the Third Proportional to 887,099.50 and 1,389,778.50

Step by Step Solution

1. Step 1: Write the proportion equation
   887,099.50 : 1,389,778.50 = 1,389,778.50 : x
2. Step 2: Convert to fraction form
   887,099.50/1,389,778.50 = 1,389,778.50/x
3. Step 3: Cross multiply
   887,099.50x = 1,389,778.50 × 1,389,778.50
4. Step 4: Simplify right side
   887,099.50x = 1,931,484,279,062.25
5. Step 5: Solve for x
   x = 1,931,484,279,062.25/887,099.50
6. Step 6: Final answer
   x = 2,177,302.86