Finding the Third Proportional to 485,623 and 760,111.50

Step by Step Solution

1. Step 1: Write the proportion equation
   485,623 : 760,111.50 = 760,111.50 : x
2. Step 2: Convert to fraction form
   485,623/760,111.50 = 760,111.50/x
3. Step 3: Cross multiply
   485,623x = 760,111.50 × 760,111.50
4. Step 4: Simplify right side
   485,623x = 577,769,492,432.25
5. Step 5: Solve for x
   x = 577,769,492,432.25/485,623
6. Step 6: Final answer
   x = 1,189,749.03