Finding the Third Proportional to 11,137,309.50 and 17,721,826

Step by Step Solution

1. Step 1: Write the proportion equation
   11,137,309.50 : 17,721,826 = 17,721,826 : x
2. Step 2: Convert to fraction form
   11,137,309.50/17,721,826 = 17,721,826/x
3. Step 3: Cross multiply
   11,137,309.50x = 17,721,826 × 17,721,826
4. Step 4: Simplify right side
   11,137,309.50x = 314,063,116,774,276
5. Step 5: Solve for x
   x = 314,063,116,774,276/11,137,309.50
6. Step 6: Final answer
   x = 28,199,190.91