Finding the Third Proportional to 4,614,570 and 9,938,808

Step by Step Solution

1. Step 1: Write the proportion equation
   4,614,570 : 9,938,808 = 9,938,808 : x
2. Step 2: Convert to fraction form
   4,614,570/9,938,808 = 9,938,808/x
3. Step 3: Cross multiply
   4,614,570x = 9,938,808 × 9,938,808
4. Step 4: Simplify right side
   4,614,570x = 98,779,904,460,864
5. Step 5: Solve for x
   x = 98,779,904,460,864/4,614,570
6. Step 6: Final answer
   x = 21,406,090.81