Finding the Third Proportional to 139,671,018 and 329,243,430

Step by Step Solution

1. Step 1: Write the proportion equation
   139,671,018 : 329,243,430 = 329,243,430 : x
2. Step 2: Convert to fraction form
   139,671,018/329,243,430 = 329,243,430/x
3. Step 3: Cross multiply
   139,671,018x = 329,243,430 × 329,243,430
4. Step 4: Simplify right side
   139,671,018x = 108,401,236,198,164,896
5. Step 5: Solve for x
   x = 108,401,236,198,164,896/139,671,018
6. Step 6: Final answer
   x = 776,118,322.54