Finding the Third Proportional to 689,730 and 1,064,123

Step by Step Solution

1. Step 1: Write the proportion equation
   689,730 : 1,064,123 = 1,064,123 : x
2. Step 2: Convert to fraction form
   689,730/1,064,123 = 1,064,123/x
3. Step 3: Cross multiply
   689,730x = 1,064,123 × 1,064,123
4. Step 4: Simplify right side
   689,730x = 1,132,357,759,129
5. Step 5: Solve for x
   x = 1,132,357,759,129/689,730
6. Step 6: Final answer
   x = 1,641,740.62