Finding the Third Proportional to 551,277 and 830,128.50

Step by Step Solution

1. Step 1: Write the proportion equation
   551,277 : 830,128.50 = 830,128.50 : x
2. Step 2: Convert to fraction form
   551,277/830,128.50 = 830,128.50/x
3. Step 3: Cross multiply
   551,277x = 830,128.50 × 830,128.50
4. Step 4: Simplify right side
   551,277x = 689,113,326,512.25
5. Step 5: Solve for x
   x = 689,113,326,512.25/551,277
6. Step 6: Final answer
   x = 1,250,030.98