Finding the Third Proportional to 428,659.50 and 931,191

Step by Step Solution

1. Step 1: Write the proportion equation
   428,659.50 : 931,191 = 931,191 : x
2. Step 2: Convert to fraction form
   428,659.50/931,191 = 931,191/x
3. Step 3: Cross multiply
   428,659.50x = 931,191 × 931,191
4. Step 4: Simplify right side
   428,659.50x = 867,116,678,481
5. Step 5: Solve for x
   x = 867,116,678,481/428,659.50
6. Step 6: Final answer
   x = 2,022,856.55