Finding the Third Proportional to 623,888 and 1,277,276

Step by Step Solution

1. Step 1: Write the proportion equation
   623,888 : 1,277,276 = 1,277,276 : x
2. Step 2: Convert to fraction form
   623,888/1,277,276 = 1,277,276/x
3. Step 3: Cross multiply
   623,888x = 1,277,276 × 1,277,276
4. Step 4: Simplify right side
   623,888x = 1,631,433,980,176
5. Step 5: Solve for x
   x = 1,631,433,980,176/623,888
6. Step 6: Final answer
   x = 2,614,946.88