Finding the Third Proportional to 14,917,906 and 21,056,520

Step by Step Solution

1. Step 1: Write the proportion equation
   14,917,906 : 21,056,520 = 21,056,520 : x
2. Step 2: Convert to fraction form
   14,917,906/21,056,520 = 21,056,520/x
3. Step 3: Cross multiply
   14,917,906x = 21,056,520 × 21,056,520
4. Step 4: Simplify right side
   14,917,906x = 443,377,034,510,400
5. Step 5: Solve for x
   x = 443,377,034,510,400/14,917,906
6. Step 6: Final answer
   x = 29,721,130.73