Finding the Third Proportional to 128,526 and 200,994

Step by Step Solution

1. Step 1: Write the proportion equation
   128,526 : 200,994 = 200,994 : x
2. Step 2: Convert to fraction form
   128,526/200,994 = 200,994/x
3. Step 3: Cross multiply
   128,526x = 200,994 × 200,994
4. Step 4: Simplify right side
   128,526x = 40,398,588,036
5. Step 5: Solve for x
   x = 40,398,588,036/128,526
6. Step 6: Final answer
   x = 314,322.30