Finding the Third Proportional to 636,388 and 1,372,354

Step by Step Solution

1. Step 1: Write the proportion equation
   636,388 : 1,372,354 = 1,372,354 : x
2. Step 2: Convert to fraction form
   636,388/1,372,354 = 1,372,354/x
3. Step 3: Cross multiply
   636,388x = 1,372,354 × 1,372,354
4. Step 4: Simplify right side
   636,388x = 1,883,355,501,316
5. Step 5: Solve for x
   x = 1,883,355,501,316/636,388
6. Step 6: Final answer
   x = 2,959,445.34