Finding the Third Proportional to 800,507 and 1,238,168

Step by Step Solution

1. Step 1: Write the proportion equation
   800,507 : 1,238,168 = 1,238,168 : x
2. Step 2: Convert to fraction form
   800,507/1,238,168 = 1,238,168/x
3. Step 3: Cross multiply
   800,507x = 1,238,168 × 1,238,168
4. Step 4: Simplify right side
   800,507x = 1,533,059,996,224
5. Step 5: Solve for x
   x = 1,533,059,996,224/800,507
6. Step 6: Final answer
   x = 1,915,111.29