Finding the Third Proportional to 64,982,672 and 142,718,066

Step by Step Solution

1. Step 1: Write the proportion equation
   64,982,672 : 142,718,066 = 142,718,066 : x
2. Step 2: Convert to fraction form
   64,982,672/142,718,066 = 142,718,066/x
3. Step 3: Cross multiply
   64,982,672x = 142,718,066 × 142,718,066
4. Step 4: Simplify right side
   64,982,672x = 20,368,446,362,780,356
5. Step 5: Solve for x
   x = 20,368,446,362,780,356/64,982,672
6. Step 6: Final answer
   x = 313,444,272.69