Finding the Third Proportional to 139,670,820 and 329,242,990.50

Step by Step Solution

1. Step 1: Write the proportion equation
   139,670,820 : 329,242,990.50 = 329,242,990.50 : x
2. Step 2: Convert to fraction form
   139,670,820/329,242,990.50 = 329,242,990.50/x
3. Step 3: Cross multiply
   139,670,820x = 329,242,990.50 × 329,242,990.50
4. Step 4: Simplify right side
   139,670,820x = 108,400,946,793,383,088
5. Step 5: Solve for x
   x = 108,400,946,793,383,088/139,670,820
6. Step 6: Final answer
   x = 776,117,350.73