Finding the Third Proportional to 190,905 and 431,314.50

Step by Step Solution

1. Step 1: Write the proportion equation
   190,905 : 431,314.50 = 431,314.50 : x
2. Step 2: Convert to fraction form
   190,905/431,314.50 = 431,314.50/x
3. Step 3: Cross multiply
   190,905x = 431,314.50 × 431,314.50
4. Step 4: Simplify right side
   190,905x = 186,032,197,910.25
5. Step 5: Solve for x
   x = 186,032,197,910.25/190,905
6. Step 6: Final answer
   x = 974,475.25