Finding the Third Proportional to 53,122,400 and 78,164,520

Step by Step Solution

1. Step 1: Write the proportion equation
   53,122,400 : 78,164,520 = 78,164,520 : x
2. Step 2: Convert to fraction form
   53,122,400/78,164,520 = 78,164,520/x
3. Step 3: Cross multiply
   53,122,400x = 78,164,520 × 78,164,520
4. Step 4: Simplify right side
   53,122,400x = 6,109,692,186,830,400
5. Step 5: Solve for x
   x = 6,109,692,186,830,400/53,122,400
6. Step 6: Final answer
   x = 115,011,599.38