Finding the Third Proportional to 19,890,508.50 and 42,687,324

Step by Step Solution

1. Step 1: Write the proportion equation
   19,890,508.50 : 42,687,324 = 42,687,324 : x
2. Step 2: Convert to fraction form
   19,890,508.50/42,687,324 = 42,687,324/x
3. Step 3: Cross multiply
   19,890,508.50x = 42,687,324 × 42,687,324
4. Step 4: Simplify right side
   19,890,508.50x = 1,822,207,630,280,976
5. Step 5: Solve for x
   x = 1,822,207,630,280,976/19,890,508.50
6. Step 6: Final answer
   x = 91,611,917.83