Finding the Third Proportional to 9,021,908 and 21,290,088

Step by Step Solution

1. Step 1: Write the proportion equation
   9,021,908 : 21,290,088 = 21,290,088 : x
2. Step 2: Convert to fraction form
   9,021,908/21,290,088 = 21,290,088/x
3. Step 3: Cross multiply
   9,021,908x = 21,290,088 × 21,290,088
4. Step 4: Simplify right side
   9,021,908x = 453,267,847,047,744
5. Step 5: Solve for x
   x = 453,267,847,047,744/9,021,908
6. Step 6: Final answer
   x = 50,240,796.85