Finding the Third Proportional to 159,281 and 342,172.50

Step by Step Solution

1. Step 1: Write the proportion equation
   159,281 : 342,172.50 = 342,172.50 : x
2. Step 2: Convert to fraction form
   159,281/342,172.50 = 342,172.50/x
3. Step 3: Cross multiply
   159,281x = 342,172.50 × 342,172.50
4. Step 4: Simplify right side
   159,281x = 117,082,019,756.25
5. Step 5: Solve for x
   x = 117,082,019,756.25/159,281
6. Step 6: Final answer
   x = 735,065.83