Finding the Third Proportional to 42,147 and 90,305.72

Step by Step Solution

1. Step 1: Write the proportion equation
   42,147 : 90,305.72 = 90,305.72 : x
2. Step 2: Convert to fraction form
   42,147/90,305.72 = 90,305.72/x
3. Step 3: Cross multiply
   42,147x = 90,305.72 × 90,305.72
4. Step 4: Simplify right side
   42,147x = 8,155,122,838.95
5. Step 5: Solve for x
   x = 8,155,122,838.95/42,147
6. Step 6: Final answer
   x = 193,492.37