Finding the Third Proportional to 290,016 and 448,248

Step by Step Solution

1. Step 1: Write the proportion equation
   290,016 : 448,248 = 448,248 : x
2. Step 2: Convert to fraction form
   290,016/448,248 = 448,248/x
3. Step 3: Cross multiply
   290,016x = 448,248 × 448,248
4. Step 4: Simplify right side
   290,016x = 200,926,269,504
5. Step 5: Solve for x
   x = 200,926,269,504/290,016
6. Step 6: Final answer
   x = 692,810.98