Finding the Third Proportional to 42,087,231 and 90,440,221.50

Step by Step Solution

1. Step 1: Write the proportion equation
   42,087,231 : 90,440,221.50 = 90,440,221.50 : x
2. Step 2: Convert to fraction form
   42,087,231/90,440,221.50 = 90,440,221.50/x
3. Step 3: Cross multiply
   42,087,231x = 90,440,221.50 × 90,440,221.50
4. Step 4: Simplify right side
   42,087,231x = 8,179,433,664,969,062
5. Step 5: Solve for x
   x = 8,179,433,664,969,062/42,087,231
6. Step 6: Final answer
   x = 194,344,780.37