Finding the Third Proportional to 8,538,756 and 13,207,146

Step by Step Solution

1. Step 1: Write the proportion equation
   8,538,756 : 13,207,146 = 13,207,146 : x
2. Step 2: Convert to fraction form
   8,538,756/13,207,146 = 13,207,146/x
3. Step 3: Cross multiply
   8,538,756x = 13,207,146 × 13,207,146
4. Step 4: Simplify right side
   8,538,756x = 174,428,705,465,316
5. Step 5: Solve for x
   x = 174,428,705,465,316/8,538,756
6. Step 6: Final answer
   x = 20,427,882.64