Finding the Third Proportional to 21,681,983 and 42,815,614

Step by Step Solution

1. Step 1: Write the proportion equation
   21,681,983 : 42,815,614 = 42,815,614 : x
2. Step 2: Convert to fraction form
   21,681,983/42,815,614 = 42,815,614/x
3. Step 3: Cross multiply
   21,681,983x = 42,815,614 × 42,815,614
4. Step 4: Simplify right side
   21,681,983x = 1,833,176,802,196,996
5. Step 5: Solve for x
   x = 1,833,176,802,196,996/21,681,983
6. Step 6: Final answer
   x = 84,548,392.19