Finding the Third Proportional to 19,781,289.75 and 41,688,019.50

Step by Step Solution

1. Step 1: Write the proportion equation
   19,781,289.75 : 41,688,019.50 = 41,688,019.50 : x
2. Step 2: Convert to fraction form
   19,781,289.75/41,688,019.50 = 41,688,019.50/x
3. Step 3: Cross multiply
   19,781,289.75x = 41,688,019.50 × 41,688,019.50
4. Step 4: Simplify right side
   19,781,289.75x = 1,737,890,969,832,380.25
5. Step 5: Solve for x
   x = 1,737,890,969,832,380.25/19,781,289.75
6. Step 6: Final answer
   x = 87,855,291.13