Finding the Third Proportional to 157,040 and 343,985.75

Step by Step Solution

1. Step 1: Write the proportion equation
   157,040 : 343,985.75 = 343,985.75 : x
2. Step 2: Convert to fraction form
   157,040/343,985.75 = 343,985.75/x
3. Step 3: Cross multiply
   157,040x = 343,985.75 × 343,985.75
4. Step 4: Simplify right side
   157,040x = 118,326,196,203.06
5. Step 5: Solve for x
   x = 118,326,196,203.06/157,040
6. Step 6: Final answer
   x = 753,478.07