Finding the Third Proportional to 9,720,983 and 21,272,782

Step by Step Solution

1. Step 1: Write the proportion equation
   9,720,983 : 21,272,782 = 21,272,782 : x
2. Step 2: Convert to fraction form
   9,720,983/21,272,782 = 21,272,782/x
3. Step 3: Cross multiply
   9,720,983x = 21,272,782 × 21,272,782
4. Step 4: Simplify right side
   9,720,983x = 452,531,254,019,524
5. Step 5: Solve for x
   x = 452,531,254,019,524/9,720,983
6. Step 6: Final answer
   x = 46,552,005.49