Finding the Third Proportional to 455,875 and 978,210

Step by Step Solution

1. Step 1: Write the proportion equation
   455,875 : 978,210 = 978,210 : x
2. Step 2: Convert to fraction form
   455,875/978,210 = 978,210/x
3. Step 3: Cross multiply
   455,875x = 978,210 × 978,210
4. Step 4: Simplify right side
   455,875x = 956,894,804,100
5. Step 5: Solve for x
   x = 956,894,804,100/455,875
6. Step 6: Final answer
   x = 2,099,028.91