Finding the Third Proportional to 156,940 and 345,554

Step by Step Solution

1. Step 1: Write the proportion equation
   156,940 : 345,554 = 345,554 : x
2. Step 2: Convert to fraction form
   156,940/345,554 = 345,554/x
3. Step 3: Cross multiply
   156,940x = 345,554 × 345,554
4. Step 4: Simplify right side
   156,940x = 119,407,566,916
5. Step 5: Solve for x
   x = 119,407,566,916/156,940
6. Step 6: Final answer
   x = 760,848.52