Finding the Third Proportional to 621,687 and 934,838.63

Step by Step Solution

1. Step 1: Write the proportion equation
   621,687 : 934,838.63 = 934,838.63 : x
2. Step 2: Convert to fraction form
   621,687/934,838.63 = 934,838.63/x
3. Step 3: Cross multiply
   621,687x = 934,838.63 × 934,838.63
4. Step 4: Simplify right side
   621,687x = 873,923,254,791.89
5. Step 5: Solve for x
   x = 873,923,254,791.89/621,687
6. Step 6: Final answer
   x = 1,405,728.69