Finding the Third Proportional to 618,946 and 1,312,410

Step by Step Solution

1. Step 1: Write the proportion equation
   618,946 : 1,312,410 = 1,312,410 : x
2. Step 2: Convert to fraction form
   618,946/1,312,410 = 1,312,410/x
3. Step 3: Cross multiply
   618,946x = 1,312,410 × 1,312,410
4. Step 4: Simplify right side
   618,946x = 1,722,420,008,100
5. Step 5: Solve for x
   x = 1,722,420,008,100/618,946
6. Step 6: Final answer
   x = 2,782,827.59