Finding the Third Proportional to 623,400 and 1,353,072

Step by Step Solution

1. Step 1: Write the proportion equation
   623,400 : 1,353,072 = 1,353,072 : x
2. Step 2: Convert to fraction form
   623,400/1,353,072 = 1,353,072/x
3. Step 3: Cross multiply
   623,400x = 1,353,072 × 1,353,072
4. Step 4: Simplify right side
   623,400x = 1,830,803,837,184
5. Step 5: Solve for x
   x = 1,830,803,837,184/623,400
6. Step 6: Final answer
   x = 2,936,804.36