Finding the Third Proportional to 2,585,991.38 and 5,487,199.88

Step by Step Solution

1. Step 1: Write the proportion equation
   2,585,991.38 : 5,487,199.88 = 5,487,199.88 : x
2. Step 2: Convert to fraction form
   2,585,991.38/5,487,199.88 = 5,487,199.88/x
3. Step 3: Cross multiply
   2,585,991.38x = 5,487,199.88 × 5,487,199.88
4. Step 4: Simplify right side
   2,585,991.38x = 30,109,362,468,200.02
5. Step 5: Solve for x
   x = 30,109,362,468,200.02/2,585,991.38
6. Step 6: Final answer
   x = 11,643,257.11