Finding the Third Proportional to 134,429 and 206,343.25

Step by Step Solution

1. Step 1: Write the proportion equation
   134,429 : 206,343.25 = 206,343.25 : x
2. Step 2: Convert to fraction form
   134,429/206,343.25 = 206,343.25/x
3. Step 3: Cross multiply
   134,429x = 206,343.25 × 206,343.25
4. Step 4: Simplify right side
   134,429x = 42,577,536,820.56
5. Step 5: Solve for x
   x = 42,577,536,820.56/134,429
6. Step 6: Final answer
   x = 316,728.81