Finding the Third Proportional to 78,043,968 and 168,074,880

Step by Step Solution

1. Step 1: Write the proportion equation
   78,043,968 : 168,074,880 = 168,074,880 : x
2. Step 2: Convert to fraction form
   78,043,968/168,074,880 = 168,074,880/x
3. Step 3: Cross multiply
   78,043,968x = 168,074,880 × 168,074,880
4. Step 4: Simplify right side
   78,043,968x = 28,249,165,287,014,400
5. Step 5: Solve for x
   x = 28,249,165,287,014,400/78,043,968
6. Step 6: Final answer
   x = 361,964,748.99