Finding the Third Proportional to 8,737,818 and 13,106,728.50

Step by Step Solution

1. Step 1: Write the proportion equation
   8,737,818 : 13,106,728.50 = 13,106,728.50 : x
2. Step 2: Convert to fraction form
   8,737,818/13,106,728.50 = 13,106,728.50/x
3. Step 3: Cross multiply
   8,737,818x = 13,106,728.50 × 13,106,728.50
4. Step 4: Simplify right side
   8,737,818x = 171,786,331,972,712.25
5. Step 5: Solve for x
   x = 171,786,331,972,712.25/8,737,818
6. Step 6: Final answer
   x = 19,660,095.00