Finding the Third Proportional to 455,857.50 and 978,175.50

Step by Step Solution

1. Step 1: Write the proportion equation
   455,857.50 : 978,175.50 = 978,175.50 : x
2. Step 2: Convert to fraction form
   455,857.50/978,175.50 = 978,175.50/x
3. Step 3: Cross multiply
   455,857.50x = 978,175.50 × 978,175.50
4. Step 4: Simplify right side
   455,857.50x = 956,827,308,800.25
5. Step 5: Solve for x
   x = 956,827,308,800.25/455,857.50
6. Step 6: Final answer
   x = 2,098,961.43