Finding the Third Proportional to 21,337,643 and 30,490,995

Step by Step Solution

1. Step 1: Write the proportion equation
   21,337,643 : 30,490,995 = 30,490,995 : x
2. Step 2: Convert to fraction form
   21,337,643/30,490,995 = 30,490,995/x
3. Step 3: Cross multiply
   21,337,643x = 30,490,995 × 30,490,995
4. Step 4: Simplify right side
   21,337,643x = 929,700,776,090,025
5. Step 5: Solve for x
   x = 929,700,776,090,025/21,337,643
6. Step 6: Final answer
   x = 43,570,921.87