Finding the Third Proportional to 318,111.75 and 692,196.19

Step by Step Solution

1. Step 1: Write the proportion equation
   318,111.75 : 692,196.19 = 692,196.19 : x
2. Step 2: Convert to fraction form
   318,111.75/692,196.19 = 692,196.19/x
3. Step 3: Cross multiply
   318,111.75x = 692,196.19 × 692,196.19
4. Step 4: Simplify right side
   318,111.75x = 479,135,561,989.54
5. Step 5: Solve for x
   x = 479,135,561,989.54/318,111.75
6. Step 6: Final answer
   x = 1,506,186.31