Finding the Third Proportional to 42,154 and 90,287

Step by Step Solution

1. Step 1: Write the proportion equation
   42,154 : 90,287 = 90,287 : x
2. Step 2: Convert to fraction form
   42,154/90,287 = 90,287/x
3. Step 3: Cross multiply
   42,154x = 90,287 × 90,287
4. Step 4: Simplify right side
   42,154x = 8,151,742,369
5. Step 5: Solve for x
   x = 8,151,742,369/42,154
6. Step 6: Final answer
   x = 193,380.04