Finding the Third Proportional to 195,989 and 415,528.50

Step by Step Solution

1. Step 1: Write the proportion equation
   195,989 : 415,528.50 = 415,528.50 : x
2. Step 2: Convert to fraction form
   195,989/415,528.50 = 415,528.50/x
3. Step 3: Cross multiply
   195,989x = 415,528.50 × 415,528.50
4. Step 4: Simplify right side
   195,989x = 172,663,934,312.25
5. Step 5: Solve for x
   x = 172,663,934,312.25/195,989
6. Step 6: Final answer
   x = 880,987.88