Finding the Third Proportional to 345,079.50 and 738,132

Step by Step Solution

1. Step 1: Write the proportion equation
   345,079.50 : 738,132 = 738,132 : x
2. Step 2: Convert to fraction form
   345,079.50/738,132 = 738,132/x
3. Step 3: Cross multiply
   345,079.50x = 738,132 × 738,132
4. Step 4: Simplify right side
   345,079.50x = 544,838,849,424
5. Step 5: Solve for x
   x = 544,838,849,424/345,079.50
6. Step 6: Final answer
   x = 1,578,879.21