Finding the Third Proportional to 90,157 and 139,594

Step by Step Solution

1. Step 1: Write the proportion equation
   90,157 : 139,594 = 139,594 : x
2. Step 2: Convert to fraction form
   90,157/139,594 = 139,594/x
3. Step 3: Cross multiply
   90,157x = 139,594 × 139,594
4. Step 4: Simplify right side
   90,157x = 19,486,484,836
5. Step 5: Solve for x
   x = 19,486,484,836/90,157
6. Step 6: Final answer
   x = 216,139.45