Finding the Third Proportional to 164,513 and 353,507

Step by Step Solution

1. Step 1: Write the proportion equation
   164,513 : 353,507 = 353,507 : x
2. Step 2: Convert to fraction form
   164,513/353,507 = 353,507/x
3. Step 3: Cross multiply
   164,513x = 353,507 × 353,507
4. Step 4: Simplify right side
   164,513x = 124,967,199,049
5. Step 5: Solve for x
   x = 124,967,199,049/164,513
6. Step 6: Final answer
   x = 759,618.99