Finding the Third Proportional to 686,558 and 1,495,168

Step by Step Solution

1. Step 1: Write the proportion equation
   686,558 : 1,495,168 = 1,495,168 : x
2. Step 2: Convert to fraction form
   686,558/1,495,168 = 1,495,168/x
3. Step 3: Cross multiply
   686,558x = 1,495,168 × 1,495,168
4. Step 4: Simplify right side
   686,558x = 2,235,527,348,224
5. Step 5: Solve for x
   x = 2,235,527,348,224/686,558
6. Step 6: Final answer
   x = 3,256,137.64