Finding the Third Proportional to 5,739,513 and 12,487,889

Step by Step Solution

1. Step 1: Write the proportion equation
   5,739,513 : 12,487,889 = 12,487,889 : x
2. Step 2: Convert to fraction form
   5,739,513/12,487,889 = 12,487,889/x
3. Step 3: Cross multiply
   5,739,513x = 12,487,889 × 12,487,889
4. Step 4: Simplify right side
   5,739,513x = 155,947,371,676,321
5. Step 5: Solve for x
   x = 155,947,371,676,321/5,739,513
6. Step 6: Final answer
   x = 27,170,836.91