Finding the Third Proportional to 338,790 and 736,627.50

Step by Step Solution

1. Step 1: Write the proportion equation
   338,790 : 736,627.50 = 736,627.50 : x
2. Step 2: Convert to fraction form
   338,790/736,627.50 = 736,627.50/x
3. Step 3: Cross multiply
   338,790x = 736,627.50 × 736,627.50
4. Step 4: Simplify right side
   338,790x = 542,620,073,756.25
5. Step 5: Solve for x
   x = 542,620,073,756.25/338,790
6. Step 6: Final answer
   x = 1,601,641.35