Finding the Third Proportional to 684,889 and 1,064,626.50

Step by Step Solution

1. Step 1: Write the proportion equation
   684,889 : 1,064,626.50 = 1,064,626.50 : x
2. Step 2: Convert to fraction form
   684,889/1,064,626.50 = 1,064,626.50/x
3. Step 3: Cross multiply
   684,889x = 1,064,626.50 × 1,064,626.50
4. Step 4: Simplify right side
   684,889x = 1,133,429,584,502.25
5. Step 5: Solve for x
   x = 1,133,429,584,502.25/684,889
6. Step 6: Final answer
   x = 1,654,909.90