Finding the Third Proportional to 83,700 and 128,222

Step by Step Solution

1. Step 1: Write the proportion equation
   83,700 : 128,222 = 128,222 : x
2. Step 2: Convert to fraction form
   83,700/128,222 = 128,222/x
3. Step 3: Cross multiply
   83,700x = 128,222 × 128,222
4. Step 4: Simplify right side
   83,700x = 16,440,881,284
5. Step 5: Solve for x
   x = 16,440,881,284/83,700
6. Step 6: Final answer
   x = 196,426.30