Finding the Third Proportional to 401,620.50 and 535,434

Step by Step Solution

1. Step 1: Write the proportion equation
   401,620.50 : 535,434 = 535,434 : x
2. Step 2: Convert to fraction form
   401,620.50/535,434 = 535,434/x
3. Step 3: Cross multiply
   401,620.50x = 535,434 × 535,434
4. Step 4: Simplify right side
   401,620.50x = 286,689,568,356
5. Step 5: Solve for x
   x = 286,689,568,356/401,620.50
6. Step 6: Final answer
   x = 713,832.01