Finding the Third Proportional to 31,152,838 and 68,178,464

Step by Step Solution

1. Step 1: Write the proportion equation
   31,152,838 : 68,178,464 = 68,178,464 : x
2. Step 2: Convert to fraction form
   31,152,838/68,178,464 = 68,178,464/x
3. Step 3: Cross multiply
   31,152,838x = 68,178,464 × 68,178,464
4. Step 4: Simplify right side
   31,152,838x = 4,648,302,953,399,296
5. Step 5: Solve for x
   x = 4,648,302,953,399,296/31,152,838
6. Step 6: Final answer
   x = 149,209,614.66