Finding the Third Proportional to 21,720,683 and 42,893,110

Step by Step Solution

1. Step 1: Write the proportion equation
   21,720,683 : 42,893,110 = 42,893,110 : x
2. Step 2: Convert to fraction form
   21,720,683/42,893,110 = 42,893,110/x
3. Step 3: Cross multiply
   21,720,683x = 42,893,110 × 42,893,110
4. Step 4: Simplify right side
   21,720,683x = 1,839,818,885,472,100
5. Step 5: Solve for x
   x = 1,839,818,885,472,100/21,720,683
6. Step 6: Final answer
   x = 84,703,546.64