Finding the Third Proportional to 155,706.50 and 340,492.50

Step by Step Solution

1. Step 1: Write the proportion equation
   155,706.50 : 340,492.50 = 340,492.50 : x
2. Step 2: Convert to fraction form
   155,706.50/340,492.50 = 340,492.50/x
3. Step 3: Cross multiply
   155,706.50x = 340,492.50 × 340,492.50
4. Step 4: Simplify right side
   155,706.50x = 115,935,142,556.25
5. Step 5: Solve for x
   x = 115,935,142,556.25/155,706.50
6. Step 6: Final answer
   x = 744,574.84