Finding the Third Proportional to 158,764.50 and 343,407

Step by Step Solution

1. Step 1: Write the proportion equation
   158,764.50 : 343,407 = 343,407 : x
2. Step 2: Convert to fraction form
   158,764.50/343,407 = 343,407/x
3. Step 3: Cross multiply
   158,764.50x = 343,407 × 343,407
4. Step 4: Simplify right side
   158,764.50x = 117,928,367,649
5. Step 5: Solve for x
   x = 117,928,367,649/158,764.50
6. Step 6: Final answer
   x = 742,788.01