Finding the Third Proportional to 13,721,454 and 20,124,085.50

Step by Step Solution

1. Step 1: Write the proportion equation
   13,721,454 : 20,124,085.50 = 20,124,085.50 : x
2. Step 2: Convert to fraction form
   13,721,454/20,124,085.50 = 20,124,085.50/x
3. Step 3: Cross multiply
   13,721,454x = 20,124,085.50 × 20,124,085.50
4. Step 4: Simplify right side
   13,721,454x = 404,978,817,211,310.25
5. Step 5: Solve for x
   x = 404,978,817,211,310.25/13,721,454
6. Step 6: Final answer
   x = 29,514,278.68