Finding the Third Proportional to 671,259 and 1,016,638.50

Step by Step Solution

1. Step 1: Write the proportion equation
   671,259 : 1,016,638.50 = 1,016,638.50 : x
2. Step 2: Convert to fraction form
   671,259/1,016,638.50 = 1,016,638.50/x
3. Step 3: Cross multiply
   671,259x = 1,016,638.50 × 1,016,638.50
4. Step 4: Simplify right side
   671,259x = 1,033,553,839,682.25
5. Step 5: Solve for x
   x = 1,033,553,839,682.25/671,259
6. Step 6: Final answer
   x = 1,539,724.37