Finding the Third Proportional to 9,908,943 and 21,008,664

Step by Step Solution

1. Step 1: Write the proportion equation
   9,908,943 : 21,008,664 = 21,008,664 : x
2. Step 2: Convert to fraction form
   9,908,943/21,008,664 = 21,008,664/x
3. Step 3: Cross multiply
   9,908,943x = 21,008,664 × 21,008,664
4. Step 4: Simplify right side
   9,908,943x = 441,363,963,064,896
5. Step 5: Solve for x
   x = 441,363,963,064,896/9,908,943
6. Step 6: Final answer
   x = 44,541,982.23