Finding the Third Proportional to 787,144 and 1,688,960

Step by Step Solution

1. Step 1: Write the proportion equation
   787,144 : 1,688,960 = 1,688,960 : x
2. Step 2: Convert to fraction form
   787,144/1,688,960 = 1,688,960/x
3. Step 3: Cross multiply
   787,144x = 1,688,960 × 1,688,960
4. Step 4: Simplify right side
   787,144x = 2,852,585,881,600
5. Step 5: Solve for x
   x = 2,852,585,881,600/787,144
6. Step 6: Final answer
   x = 3,623,969.54