Finding the Third Proportional to 90,270 and 139,703

Step by Step Solution

1. Step 1: Write the proportion equation
   90,270 : 139,703 = 139,703 : x
2. Step 2: Convert to fraction form
   90,270/139,703 = 139,703/x
3. Step 3: Cross multiply
   90,270x = 139,703 × 139,703
4. Step 4: Simplify right side
   90,270x = 19,516,928,209
5. Step 5: Solve for x
   x = 19,516,928,209/90,270
6. Step 6: Final answer
   x = 216,206.14