Finding the Third Proportional to 306,056,966 and 655,776,978

Step by Step Solution

1. Step 1: Write the proportion equation
   306,056,966 : 655,776,978 = 655,776,978 : x
2. Step 2: Convert to fraction form
   306,056,966/655,776,978 = 655,776,978/x
3. Step 3: Cross multiply
   306,056,966x = 655,776,978 × 655,776,978
4. Step 4: Simplify right side
   306,056,966x = 430,043,444,874,812,480
5. Step 5: Solve for x
   x = 430,043,444,874,812,480/306,056,966
6. Step 6: Final answer
   x = 1,405,109,154.99