Finding the Third Proportional to 19,781,776.50 and 42,176,449.50

Step by Step Solution

1. Step 1: Write the proportion equation
   19,781,776.50 : 42,176,449.50 = 42,176,449.50 : x
2. Step 2: Convert to fraction form
   19,781,776.50/42,176,449.50 = 42,176,449.50/x
3. Step 3: Cross multiply
   19,781,776.50x = 42,176,449.50 × 42,176,449.50
4. Step 4: Simplify right side
   19,781,776.50x = 1,778,852,892,426,050.25
5. Step 5: Solve for x
   x = 1,778,852,892,426,050.25/19,781,776.50
6. Step 6: Final answer
   x = 89,923,819.15