Finding the Third Proportional to 64,855,820 and 141,678,907

Step by Step Solution

1. Step 1: Write the proportion equation
   64,855,820 : 141,678,907 = 141,678,907 : x
2. Step 2: Convert to fraction form
   64,855,820/141,678,907 = 141,678,907/x
3. Step 3: Cross multiply
   64,855,820x = 141,678,907 × 141,678,907
4. Step 4: Simplify right side
   64,855,820x = 20,072,912,688,714,648
5. Step 5: Solve for x
   x = 20,072,912,688,714,648/64,855,820
6. Step 6: Final answer
   x = 309,500,561.23