Finding the Third Proportional to 2,608,138.50 and 3,989,872.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,608,138.50 : 3,989,872.50 = 3,989,872.50 : x
2. Step 2: Convert to fraction form
   2,608,138.50/3,989,872.50 = 3,989,872.50/x
3. Step 3: Cross multiply
   2,608,138.50x = 3,989,872.50 × 3,989,872.50
4. Step 4: Simplify right side
   2,608,138.50x = 15,919,082,566,256.25
5. Step 5: Solve for x
   x = 15,919,082,566,256.25/2,608,138.50
6. Step 6: Final answer
   x = 6,103,618.56