Finding the Third Proportional to 8,690,132 and 13,147,047

Step by Step Solution

1. Step 1: Write the proportion equation
   8,690,132 : 13,147,047 = 13,147,047 : x
2. Step 2: Convert to fraction form
   8,690,132/13,147,047 = 13,147,047/x
3. Step 3: Cross multiply
   8,690,132x = 13,147,047 × 13,147,047
4. Step 4: Simplify right side
   8,690,132x = 172,844,844,820,209
5. Step 5: Solve for x
   x = 172,844,844,820,209/8,690,132
6. Step 6: Final answer
   x = 19,889,783.59