Finding the Third Proportional to 403,623 and 625,117.50

Step by Step Solution

1. Step 1: Write the proportion equation
   403,623 : 625,117.50 = 625,117.50 : x
2. Step 2: Convert to fraction form
   403,623/625,117.50 = 625,117.50/x
3. Step 3: Cross multiply
   403,623x = 625,117.50 × 625,117.50
4. Step 4: Simplify right side
   403,623x = 390,771,888,806.25
5. Step 5: Solve for x
   x = 390,771,888,806.25/403,623
6. Step 6: Final answer
   x = 968,160.61