Finding the Third Proportional to 156,530.25 and 342,580.50

Step by Step Solution

1. Step 1: Write the proportion equation
   156,530.25 : 342,580.50 = 342,580.50 : x
2. Step 2: Convert to fraction form
   156,530.25/342,580.50 = 342,580.50/x
3. Step 3: Cross multiply
   156,530.25x = 342,580.50 × 342,580.50
4. Step 4: Simplify right side
   156,530.25x = 117,361,398,980.25
5. Step 5: Solve for x
   x = 117,361,398,980.25/156,530.25
6. Step 6: Final answer
   x = 749,768.17