Finding the Third Proportional to 210,114 and 315,386.16

Step by Step Solution

1. Step 1: Write the proportion equation
   210,114 : 315,386.16 = 315,386.16 : x
2. Step 2: Convert to fraction form
   210,114/315,386.16 = 315,386.16/x
3. Step 3: Cross multiply
   210,114x = 315,386.16 × 315,386.16
4. Step 4: Simplify right side
   210,114x = 99,468,427,554.15
5. Step 5: Solve for x
   x = 99,468,427,554.15/210,114
6. Step 6: Final answer
   x = 473,402.19