Finding the Third Proportional to 656,128.50 and 1,364,608.50

Step by Step Solution

1. Step 1: Write the proportion equation
   656,128.50 : 1,364,608.50 = 1,364,608.50 : x
2. Step 2: Convert to fraction form
   656,128.50/1,364,608.50 = 1,364,608.50/x
3. Step 3: Cross multiply
   656,128.50x = 1,364,608.50 × 1,364,608.50
4. Step 4: Simplify right side
   656,128.50x = 1,862,156,358,272.25
5. Step 5: Solve for x
   x = 1,862,156,358,272.25/656,128.50
6. Step 6: Final answer
   x = 2,838,097.05