Finding the Third Proportional to 664,969.50 and 1,053,124.50

Step by Step Solution

1. Step 1: Write the proportion equation
   664,969.50 : 1,053,124.50 = 1,053,124.50 : x
2. Step 2: Convert to fraction form
   664,969.50/1,053,124.50 = 1,053,124.50/x
3. Step 3: Cross multiply
   664,969.50x = 1,053,124.50 × 1,053,124.50
4. Step 4: Simplify right side
   664,969.50x = 1,109,071,212,500.25
5. Step 5: Solve for x
   x = 1,109,071,212,500.25/664,969.50
6. Step 6: Final answer
   x = 1,667,852.75