Finding the Third Proportional to 157,915.50 and 342,435

Step by Step Solution

1. Step 1: Write the proportion equation
   157,915.50 : 342,435 = 342,435 : x
2. Step 2: Convert to fraction form
   157,915.50/342,435 = 342,435/x
3. Step 3: Cross multiply
   157,915.50x = 342,435 × 342,435
4. Step 4: Simplify right side
   157,915.50x = 117,261,729,225
5. Step 5: Solve for x
   x = 117,261,729,225/157,915.50
6. Step 6: Final answer
   x = 742,559.97