Finding the Third Proportional to 72,647,982 and 111,815,433

Step by Step Solution

1. Step 1: Write the proportion equation
   72,647,982 : 111,815,433 = 111,815,433 : x
2. Step 2: Convert to fraction form
   72,647,982/111,815,433 = 111,815,433/x
3. Step 3: Cross multiply
   72,647,982x = 111,815,433 × 111,815,433
4. Step 4: Simplify right side
   72,647,982x = 12,502,691,056,977,488
5. Step 5: Solve for x
   x = 12,502,691,056,977,488/72,647,982
6. Step 6: Final answer
   x = 172,099,633.23