Finding the Third Proportional to 554,390 and 772,404

Step by Step Solution

1. Step 1: Write the proportion equation
   554,390 : 772,404 = 772,404 : x
2. Step 2: Convert to fraction form
   554,390/772,404 = 772,404/x
3. Step 3: Cross multiply
   554,390x = 772,404 × 772,404
4. Step 4: Simplify right side
   554,390x = 596,607,939,216
5. Step 5: Solve for x
   x = 596,607,939,216/554,390
6. Step 6: Final answer
   x = 1,076,152.06