Finding the Third Proportional to 157,321.50 and 336,271.50

Step by Step Solution

1. Step 1: Write the proportion equation
   157,321.50 : 336,271.50 = 336,271.50 : x
2. Step 2: Convert to fraction form
   157,321.50/336,271.50 = 336,271.50/x
3. Step 3: Cross multiply
   157,321.50x = 336,271.50 × 336,271.50
4. Step 4: Simplify right side
   157,321.50x = 113,078,521,712.25
5. Step 5: Solve for x
   x = 113,078,521,712.25/157,321.50
6. Step 6: Final answer
   x = 718,773.48