Finding the Third Proportional to 10,434,815 and 13,721,731.50

Step by Step Solution

1. Step 1: Write the proportion equation
   10,434,815 : 13,721,731.50 = 13,721,731.50 : x
2. Step 2: Convert to fraction form
   10,434,815/13,721,731.50 = 13,721,731.50/x
3. Step 3: Cross multiply
   10,434,815x = 13,721,731.50 × 13,721,731.50
4. Step 4: Simplify right side
   10,434,815x = 188,285,915,358,092.25
5. Step 5: Solve for x
   x = 188,285,915,358,092.25/10,434,815
6. Step 6: Final answer
   x = 18,044,010.88