Finding the Third Proportional to 156,928.50 and 342,288

Step by Step Solution

1. Step 1: Write the proportion equation
   156,928.50 : 342,288 = 342,288 : x
2. Step 2: Convert to fraction form
   156,928.50/342,288 = 342,288/x
3. Step 3: Cross multiply
   156,928.50x = 342,288 × 342,288
4. Step 4: Simplify right side
   156,928.50x = 117,161,074,944
5. Step 5: Solve for x
   x = 117,161,074,944/156,928.50
6. Step 6: Final answer
   x = 746,588.89