Finding the Third Proportional to 5,473,128 and 8,585,670

Step by Step Solution

1. Step 1: Write the proportion equation
   5,473,128 : 8,585,670 = 8,585,670 : x
2. Step 2: Convert to fraction form
   5,473,128/8,585,670 = 8,585,670/x
3. Step 3: Cross multiply
   5,473,128x = 8,585,670 × 8,585,670
4. Step 4: Simplify right side
   5,473,128x = 73,713,729,348,900
5. Step 5: Solve for x
   x = 73,713,729,348,900/5,473,128
6. Step 6: Final answer
   x = 13,468,299.91