Finding the Third Proportional to 583,605 and 875,407.50

Step by Step Solution

1. Step 1: Write the proportion equation
   583,605 : 875,407.50 = 875,407.50 : x
2. Step 2: Convert to fraction form
   583,605/875,407.50 = 875,407.50/x
3. Step 3: Cross multiply
   583,605x = 875,407.50 × 875,407.50
4. Step 4: Simplify right side
   583,605x = 766,338,291,056.25
5. Step 5: Solve for x
   x = 766,338,291,056.25/583,605
6. Step 6: Final answer
   x = 1,313,111.25