Finding the Third Proportional to 777,835 and 1,688,456

Step by Step Solution

1. Step 1: Write the proportion equation
   777,835 : 1,688,456 = 1,688,456 : x
2. Step 2: Convert to fraction form
   777,835/1,688,456 = 1,688,456/x
3. Step 3: Cross multiply
   777,835x = 1,688,456 × 1,688,456
4. Step 4: Simplify right side
   777,835x = 2,850,883,663,936
5. Step 5: Solve for x
   x = 2,850,883,663,936/777,835
6. Step 6: Final answer
   x = 3,665,152.20