Finding the Third Proportional to 8,196,315 and 13,169,272.50

Step by Step Solution

1. Step 1: Write the proportion equation
   8,196,315 : 13,169,272.50 = 13,169,272.50 : x
2. Step 2: Convert to fraction form
   8,196,315/13,169,272.50 = 13,169,272.50/x
3. Step 3: Cross multiply
   8,196,315x = 13,169,272.50 × 13,169,272.50
4. Step 4: Simplify right side
   8,196,315x = 173,429,738,179,256.25
5. Step 5: Solve for x
   x = 173,429,738,179,256.25/8,196,315
6. Step 6: Final answer
   x = 21,159,476.93