Finding the Third Proportional to 621,866 and 1,342,984

Step by Step Solution

1. Step 1: Write the proportion equation
   621,866 : 1,342,984 = 1,342,984 : x
2. Step 2: Convert to fraction form
   621,866/1,342,984 = 1,342,984/x
3. Step 3: Cross multiply
   621,866x = 1,342,984 × 1,342,984
4. Step 4: Simplify right side
   621,866x = 1,803,606,024,256
5. Step 5: Solve for x
   x = 1,803,606,024,256/621,866
6. Step 6: Final answer
   x = 2,900,312.97