Finding the Third Proportional to 215,869.50 and 458,046

Step by Step Solution

1. Step 1: Write the proportion equation
   215,869.50 : 458,046 = 458,046 : x
2. Step 2: Convert to fraction form
   215,869.50/458,046 = 458,046/x
3. Step 3: Cross multiply
   215,869.50x = 458,046 × 458,046
4. Step 4: Simplify right side
   215,869.50x = 209,806,138,116
5. Step 5: Solve for x
   x = 209,806,138,116/215,869.50
6. Step 6: Final answer
   x = 971,911.91