Finding the Third Proportional to 191,362 and 420,740

Step by Step Solution

1. Step 1: Write the proportion equation
   191,362 : 420,740 = 420,740 : x
2. Step 2: Convert to fraction form
   191,362/420,740 = 420,740/x
3. Step 3: Cross multiply
   191,362x = 420,740 × 420,740
4. Step 4: Simplify right side
   191,362x = 177,022,147,600
5. Step 5: Solve for x
   x = 177,022,147,600/191,362
6. Step 6: Final answer
   x = 925,064.26