Finding the Third Proportional to 157,039.50 and 343,986

Step by Step Solution

1. Step 1: Write the proportion equation
   157,039.50 : 343,986 = 343,986 : x
2. Step 2: Convert to fraction form
   157,039.50/343,986 = 343,986/x
3. Step 3: Cross multiply
   157,039.50x = 343,986 × 343,986
4. Step 4: Simplify right side
   157,039.50x = 118,326,368,196
5. Step 5: Solve for x
   x = 118,326,368,196/157,039.50
6. Step 6: Final answer
   x = 753,481.56