Finding the Third Proportional to 8,691,700 and 12,411,150

Step by Step Solution

1. Step 1: Write the proportion equation
   8,691,700 : 12,411,150 = 12,411,150 : x
2. Step 2: Convert to fraction form
   8,691,700/12,411,150 = 12,411,150/x
3. Step 3: Cross multiply
   8,691,700x = 12,411,150 × 12,411,150
4. Step 4: Simplify right side
   8,691,700x = 154,036,644,322,500
5. Step 5: Solve for x
   x = 154,036,644,322,500/8,691,700
6. Step 6: Final answer
   x = 17,722,268.87