Finding the Third Proportional to 623,311 and 1,345,036

Step by Step Solution

1. Step 1: Write the proportion equation
   623,311 : 1,345,036 = 1,345,036 : x
2. Step 2: Convert to fraction form
   623,311/1,345,036 = 1,345,036/x
3. Step 3: Cross multiply
   623,311x = 1,345,036 × 1,345,036
4. Step 4: Simplify right side
   623,311x = 1,809,121,841,296
5. Step 5: Solve for x
   x = 1,809,121,841,296/623,311
6. Step 6: Final answer
   x = 2,902,438.50