Finding the Third Proportional to 2,499,987 and 5,379,358.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,499,987 : 5,379,358.50 = 5,379,358.50 : x
2. Step 2: Convert to fraction form
   2,499,987/5,379,358.50 = 5,379,358.50/x
3. Step 3: Cross multiply
   2,499,987x = 5,379,358.50 × 5,379,358.50
4. Step 4: Simplify right side
   2,499,987x = 28,937,497,871,522.25
5. Step 5: Solve for x
   x = 28,937,497,871,522.25/2,499,987
6. Step 6: Final answer
   x = 11,575,059.34