Finding the Third Proportional to 118,300.50 and 258,453

Step by Step Solution

1. Step 1: Write the proportion equation
   118,300.50 : 258,453 = 258,453 : x
2. Step 2: Convert to fraction form
   118,300.50/258,453 = 258,453/x
3. Step 3: Cross multiply
   118,300.50x = 258,453 × 258,453
4. Step 4: Simplify right side
   118,300.50x = 66,797,953,209
5. Step 5: Solve for x
   x = 66,797,953,209/118,300.50
6. Step 6: Final answer
   x = 564,646.41