Finding the Third Proportional to 141,521 and 209,041.50

Step by Step Solution

1. Step 1: Write the proportion equation
   141,521 : 209,041.50 = 209,041.50 : x
2. Step 2: Convert to fraction form
   141,521/209,041.50 = 209,041.50/x
3. Step 3: Cross multiply
   141,521x = 209,041.50 × 209,041.50
4. Step 4: Simplify right side
   141,521x = 43,698,348,722.25
5. Step 5: Solve for x
   x = 43,698,348,722.25/141,521
6. Step 6: Final answer
   x = 308,776.43