Finding the Third Proportional to 140,928,054 and 309,569,772

Step by Step Solution

1. Step 1: Write the proportion equation
   140,928,054 : 309,569,772 = 309,569,772 : x
2. Step 2: Convert to fraction form
   140,928,054/309,569,772 = 309,569,772/x
3. Step 3: Cross multiply
   140,928,054x = 309,569,772 × 309,569,772
4. Step 4: Simplify right side
   140,928,054x = 95,833,443,736,131,984
5. Step 5: Solve for x
   x = 95,833,443,736,131,984/140,928,054
6. Step 6: Final answer
   x = 680,016,795.92