Finding the Third Proportional to 2,389,869.75 and 5,160,061.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,389,869.75 : 5,160,061.50 = 5,160,061.50 : x
2. Step 2: Convert to fraction form
   2,389,869.75/5,160,061.50 = 5,160,061.50/x
3. Step 3: Cross multiply
   2,389,869.75x = 5,160,061.50 × 5,160,061.50
4. Step 4: Simplify right side
   2,389,869.75x = 26,626,234,683,782.25
5. Step 5: Solve for x
   x = 26,626,234,683,782.25/2,389,869.75
6. Step 6: Final answer
   x = 11,141,291.15