Finding the Third Proportional to 309,139,284 and 666,704,760

Step by Step Solution

1. Step 1: Write the proportion equation
   309,139,284 : 666,704,760 = 666,704,760 : x
2. Step 2: Convert to fraction form
   309,139,284/666,704,760 = 666,704,760/x
3. Step 3: Cross multiply
   309,139,284x = 666,704,760 × 666,704,760
4. Step 4: Simplify right side
   309,139,284x = 444,495,237,006,657,600
5. Step 5: Solve for x
   x = 444,495,237,006,657,600/309,139,284
6. Step 6: Final answer
   x = 1,437,847,792.28