Finding the Third Proportional to 13,865,753 and 21,638,036

Step by Step Solution

1. Step 1: Write the proportion equation
   13,865,753 : 21,638,036 = 21,638,036 : x
2. Step 2: Convert to fraction form
   13,865,753/21,638,036 = 21,638,036/x
3. Step 3: Cross multiply
   13,865,753x = 21,638,036 × 21,638,036
4. Step 4: Simplify right side
   13,865,753x = 468,204,601,937,296
5. Step 5: Solve for x
   x = 468,204,601,937,296/13,865,753
6. Step 6: Final answer
   x = 33,766,979.83