Finding the Third Proportional to 787,142 and 1,688,956

Step by Step Solution

1. Step 1: Write the proportion equation
   787,142 : 1,688,956 = 1,688,956 : x
2. Step 2: Convert to fraction form
   787,142/1,688,956 = 1,688,956/x
3. Step 3: Cross multiply
   787,142x = 1,688,956 × 1,688,956
4. Step 4: Simplify right side
   787,142x = 2,852,572,369,936
5. Step 5: Solve for x
   x = 2,852,572,369,936/787,142
6. Step 6: Final answer
   x = 3,623,961.58