Finding the Third Proportional to 687,178 and 1,048,535

Step by Step Solution

1. Step 1: Write the proportion equation
   687,178 : 1,048,535 = 1,048,535 : x
2. Step 2: Convert to fraction form
   687,178/1,048,535 = 1,048,535/x
3. Step 3: Cross multiply
   687,178x = 1,048,535 × 1,048,535
4. Step 4: Simplify right side
   687,178x = 1,099,425,646,225
5. Step 5: Solve for x
   x = 1,099,425,646,225/687,178
6. Step 6: Final answer
   x = 1,599,913.92