Finding the Third Proportional to 178,693,380 and 387,059,064

Step by Step Solution

1. Step 1: Write the proportion equation
   178,693,380 : 387,059,064 = 387,059,064 : x
2. Step 2: Convert to fraction form
   178,693,380/387,059,064 = 387,059,064/x
3. Step 3: Cross multiply
   178,693,380x = 387,059,064 × 387,059,064
4. Step 4: Simplify right side
   178,693,380x = 149,814,719,024,556,096
5. Step 5: Solve for x
   x = 149,814,719,024,556,096/178,693,380
6. Step 6: Final answer
   x = 838,389,866.62