Finding the Third Proportional to 139,671,018 and 329,243,368.50

Step by Step Solution

1. Step 1: Write the proportion equation
   139,671,018 : 329,243,368.50 = 329,243,368.50 : x
2. Step 2: Convert to fraction form
   139,671,018/329,243,368.50 = 329,243,368.50/x
3. Step 3: Cross multiply
   139,671,018x = 329,243,368.50 × 329,243,368.50
4. Step 4: Simplify right side
   139,671,018x = 108,401,195,701,226,800
5. Step 5: Solve for x
   x = 108,401,195,701,226,800/139,671,018
6. Step 6: Final answer
   x = 776,118,032.60