Finding the Third Proportional to 78,252,300 and 171,621,144

Step by Step Solution

1. Step 1: Write the proportion equation
   78,252,300 : 171,621,144 = 171,621,144 : x
2. Step 2: Convert to fraction form
   78,252,300/171,621,144 = 171,621,144/x
3. Step 3: Cross multiply
   78,252,300x = 171,621,144 × 171,621,144
4. Step 4: Simplify right side
   78,252,300x = 29,453,817,067,868,736
5. Step 5: Solve for x
   x = 29,453,817,067,868,736/78,252,300
6. Step 6: Final answer
   x = 376,395,544.51