Finding the Third Proportional to 81,756,932 and 178,029,064

Step by Step Solution

1. Step 1: Write the proportion equation
   81,756,932 : 178,029,064 = 178,029,064 : x
2. Step 2: Convert to fraction form
   81,756,932/178,029,064 = 178,029,064/x
3. Step 3: Cross multiply
   81,756,932x = 178,029,064 × 178,029,064
4. Step 4: Simplify right side
   81,756,932x = 31,694,347,628,716,096
5. Step 5: Solve for x
   x = 31,694,347,628,716,096/81,756,932
6. Step 6: Final answer
   x = 387,665,569.80