Finding the Third Proportional to 538,602 and 819,097.50

Step by Step Solution

1. Step 1: Write the proportion equation
   538,602 : 819,097.50 = 819,097.50 : x
2. Step 2: Convert to fraction form
   538,602/819,097.50 = 819,097.50/x
3. Step 3: Cross multiply
   538,602x = 819,097.50 × 819,097.50
4. Step 4: Simplify right side
   538,602x = 670,920,714,506.25
5. Step 5: Solve for x
   x = 670,920,714,506.25/538,602
6. Step 6: Final answer
   x = 1,245,670.67