Finding the Third Proportional to 88,664 and 191,240

Step by Step Solution

1. Step 1: Write the proportion equation
   88,664 : 191,240 = 191,240 : x
2. Step 2: Convert to fraction form
   88,664/191,240 = 191,240/x
3. Step 3: Cross multiply
   88,664x = 191,240 × 191,240
4. Step 4: Simplify right side
   88,664x = 36,572,737,600
5. Step 5: Solve for x
   x = 36,572,737,600/88,664
6. Step 6: Final answer
   x = 412,486.89