Finding the Third Proportional to 191,029.50 and 258,516

Step by Step Solution

1. Step 1: Write the proportion equation
   191,029.50 : 258,516 = 258,516 : x
2. Step 2: Convert to fraction form
   191,029.50/258,516 = 258,516/x
3. Step 3: Cross multiply
   191,029.50x = 258,516 × 258,516
4. Step 4: Simplify right side
   191,029.50x = 66,830,522,256
5. Step 5: Solve for x
   x = 66,830,522,256/191,029.50
6. Step 6: Final answer
   x = 349,843.99