Finding the Third Proportional to 4,063,200 and 8,666,400

Step by Step Solution

1. Step 1: Write the proportion equation
   4,063,200 : 8,666,400 = 8,666,400 : x
2. Step 2: Convert to fraction form
   4,063,200/8,666,400 = 8,666,400/x
3. Step 3: Cross multiply
   4,063,200x = 8,666,400 × 8,666,400
4. Step 4: Simplify right side
   4,063,200x = 75,106,488,960,000
5. Step 5: Solve for x
   x = 75,106,488,960,000/4,063,200
6. Step 6: Final answer
   x = 18,484,566.10