Finding the Third Proportional to 189,381 and 438,460.50

Step by Step Solution

1. Step 1: Write the proportion equation
   189,381 : 438,460.50 = 438,460.50 : x
2. Step 2: Convert to fraction form
   189,381/438,460.50 = 438,460.50/x
3. Step 3: Cross multiply
   189,381x = 438,460.50 × 438,460.50
4. Step 4: Simplify right side
   189,381x = 192,247,610,060.25
5. Step 5: Solve for x
   x = 192,247,610,060.25/189,381
6. Step 6: Final answer
   x = 1,015,136.74