Finding the Third Proportional to 42,678,652.50 and 100,715,256

Step by Step Solution

1. Step 1: Write the proportion equation
   42,678,652.50 : 100,715,256 = 100,715,256 : x
2. Step 2: Convert to fraction form
   42,678,652.50/100,715,256 = 100,715,256/x
3. Step 3: Cross multiply
   42,678,652.50x = 100,715,256 × 100,715,256
4. Step 4: Simplify right side
   42,678,652.50x = 10,143,562,791,145,536
5. Step 5: Solve for x
   x = 10,143,562,791,145,536/42,678,652.50
6. Step 6: Final answer
   x = 237,672,986.30