Finding the Third Proportional to 42,248 and 90,156

Step by Step Solution

1. Step 1: Write the proportion equation
   42,248 : 90,156 = 90,156 : x
2. Step 2: Convert to fraction form
   42,248/90,156 = 90,156/x
3. Step 3: Cross multiply
   42,248x = 90,156 × 90,156
4. Step 4: Simplify right side
   42,248x = 8,128,104,336
5. Step 5: Solve for x
   x = 8,128,104,336/42,248
6. Step 6: Final answer
   x = 192,390.27