Finding the Third Proportional to 404,152.45 and 561,941.72

Step by Step Solution

1. Step 1: Write the proportion equation
   404,152.45 : 561,941.72 = 561,941.72 : x
2. Step 2: Convert to fraction form
   404,152.45/561,941.72 = 561,941.72/x
3. Step 3: Cross multiply
   404,152.45x = 561,941.72 × 561,941.72
4. Step 4: Simplify right side
   404,152.45x = 315,778,495,271.70
5. Step 5: Solve for x
   x = 315,778,495,271.70/404,152.45
6. Step 6: Final answer
   x = 781,335.09