Finding the Third Proportional to 147,249,144 and 320,354,780

Step by Step Solution

1. Step 1: Write the proportion equation
   147,249,144 : 320,354,780 = 320,354,780 : x
2. Step 2: Convert to fraction form
   147,249,144/320,354,780 = 320,354,780/x
3. Step 3: Cross multiply
   147,249,144x = 320,354,780 × 320,354,780
4. Step 4: Simplify right side
   147,249,144x = 102,627,185,068,848,400
5. Step 5: Solve for x
   x = 102,627,185,068,848,400/147,249,144
6. Step 6: Final answer
   x = 696,962,863.63