Finding the Third Proportional to 211,690.50 and 456,618

Step by Step Solution

1. Step 1: Write the proportion equation
   211,690.50 : 456,618 = 456,618 : x
2. Step 2: Convert to fraction form
   211,690.50/456,618 = 456,618/x
3. Step 3: Cross multiply
   211,690.50x = 456,618 × 456,618
4. Step 4: Simplify right side
   211,690.50x = 208,499,997,924
5. Step 5: Solve for x
   x = 208,499,997,924/211,690.50
6. Step 6: Final answer
   x = 984,928.46