Finding the Third Proportional to 191,259,700.88 and 405,503,503.59

Step by Step Solution

1. Step 1: Write the proportion equation
   191,259,700.88 : 405,503,503.59 = 405,503,503.59 : x
2. Step 2: Convert to fraction form
   191,259,700.88/405,503,503.59 = 405,503,503.59/x
3. Step 3: Cross multiply
   191,259,700.88x = 405,503,503.59 × 405,503,503.59
4. Step 4: Simplify right side
   191,259,700.88x = 164,433,091,426,806,432
5. Step 5: Solve for x
   x = 164,433,091,426,806,432/191,259,700.88
6. Step 6: Final answer
   x = 859,737,261.30