Finding the Third Proportional to 4,287,240 and 9,438,068

Step by Step Solution

1. Step 1: Write the proportion equation
   4,287,240 : 9,438,068 = 9,438,068 : x
2. Step 2: Convert to fraction form
   4,287,240/9,438,068 = 9,438,068/x
3. Step 3: Cross multiply
   4,287,240x = 9,438,068 × 9,438,068
4. Step 4: Simplify right side
   4,287,240x = 89,077,127,572,624
5. Step 5: Solve for x
   x = 89,077,127,572,624/4,287,240
6. Step 6: Final answer
   x = 20,777,266.39