Finding the Third Proportional to 2,521,129.50 and 5,427,980

Step by Step Solution

1. Step 1: Write the proportion equation
   2,521,129.50 : 5,427,980 = 5,427,980 : x
2. Step 2: Convert to fraction form
   2,521,129.50/5,427,980 = 5,427,980/x
3. Step 3: Cross multiply
   2,521,129.50x = 5,427,980 × 5,427,980
4. Step 4: Simplify right side
   2,521,129.50x = 29,462,966,880,400
5. Step 5: Solve for x
   x = 29,462,966,880,400/2,521,129.50
6. Step 6: Final answer
   x = 11,686,415.51