Finding the Third Proportional to 402,277.50 and 554,141

Step by Step Solution

1. Step 1: Write the proportion equation
   402,277.50 : 554,141 = 554,141 : x
2. Step 2: Convert to fraction form
   402,277.50/554,141 = 554,141/x
3. Step 3: Cross multiply
   402,277.50x = 554,141 × 554,141
4. Step 4: Simplify right side
   402,277.50x = 307,072,247,881
5. Step 5: Solve for x
   x = 307,072,247,881/402,277.50
6. Step 6: Final answer
   x = 763,334.38