Finding the Third Proportional to 8,690,117 and 13,147,020

Step by Step Solution

1. Step 1: Write the proportion equation
   8,690,117 : 13,147,020 = 13,147,020 : x
2. Step 2: Convert to fraction form
   8,690,117/13,147,020 = 13,147,020/x
3. Step 3: Cross multiply
   8,690,117x = 13,147,020 × 13,147,020
4. Step 4: Simplify right side
   8,690,117x = 172,844,134,880,400
5. Step 5: Solve for x
   x = 172,844,134,880,400/8,690,117
6. Step 6: Final answer
   x = 19,889,736.22