Finding the Third Proportional to 136,300 and 206,910

Step by Step Solution

1. Step 1: Write the proportion equation
   136,300 : 206,910 = 206,910 : x
2. Step 2: Convert to fraction form
   136,300/206,910 = 206,910/x
3. Step 3: Cross multiply
   136,300x = 206,910 × 206,910
4. Step 4: Simplify right side
   136,300x = 42,811,748,100
5. Step 5: Solve for x
   x = 42,811,748,100/136,300
6. Step 6: Final answer
   x = 314,099.40