Finding the Third Proportional to 684,139 and 1,073,206

Step by Step Solution

1. Step 1: Write the proportion equation
   684,139 : 1,073,206 = 1,073,206 : x
2. Step 2: Convert to fraction form
   684,139/1,073,206 = 1,073,206/x
3. Step 3: Cross multiply
   684,139x = 1,073,206 × 1,073,206
4. Step 4: Simplify right side
   684,139x = 1,151,771,118,436
5. Step 5: Solve for x
   x = 1,151,771,118,436/684,139
6. Step 6: Final answer
   x = 1,683,533.78